Heart-clogging trans fats were once a staple of the American diet, plentiful in baked goods, microwave popcorn and fried foods. Now, mindful of the health risks, the Food and Drug Administration is getting rid of what’s left of them for good.

Do you know what to do if someone collapses with heart trouble? This week’s Jefferson Award winner has made it her mission to teach thousands of children what to do in that situation, so they can save a life.